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Abstract
A solution for the transient heat transfer during plane strain upsetting of a viscoplastic strip has been developed using a Lagrangian coordinate system and the Green's function available in the literature. A general approximate solution for stress and velocity found elsewhere has been used. In contrast to conventional viscoplastic models adopted in theoretical analyses of metal forming processes, the model considered in the present paper includes a saturation stress. This model used in the conjunction with the maximum friction law predicts the localization of plastic deformation in the vicinity of the friction surface. In turn, localized plastic deformation and temperature are responsible for the generation of a very narrow layer with drastically modified microstructure near the friction surface. The appearance of such layers is reported in numerous experimental works
Original language | English |
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Article number | e201700313 |
Number of pages | 10 |
Journal | ZAMM - Journal of Applied Mathematics and Mechanics / Zeitschrift für Angewandte Mathematik und Mechanik |
Volume | 99 |
Issue number | 5 |
Early online date | 27 Feb 2019 |
DOIs | |
Publication status | Published - 01 May 2019 |
Keywords
- friction
- localization of plastic deformation
- singularity
- upsetting
- viscoplasticity
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MATRIXASSAY : Novel Cell Migration Assay based on Microtissue Technology and Tissue-Specific Matrices
Mishuris, G. (PI)
01 Jun 2016 → 31 May 2020
Project: Externally funded research